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Combining of neutron spin echo and reflectivity: a new technique for probing surface and interface order

2003; Elsevier BV; Volume: 336; Issue: 1-2 Linguagem: Inglês

10.1016/s0921-4526(03)00264-3

1873-2135

J. Major, H. Dosch, G. P. Felcher, K. Habicht, T. Keller, S. G. E. te Velthuis, Alexeï Vorobiev, M.C. Wahl,

Ion-surface interactions and analysis

The recently proposed spin-echo resolved grazing-incidence scattering (SERGIS) uses the well-known neutron spin echo effect for encoding the momentum transfer in reflectometry. By the application of tilted magnetic-field borders, SERGIS measures the scattering angle in grazing incidence experiments in absence of any geometrical beam-defining tool, such as slits. The main difficulty in such set-ups is the realization of geometrically flat field borders. The possibility of the application of neutron resonance spin echo (NRSE) for such a purpose is discussed, where the field borders are defined by current sheets. Prototype SERGIS experiments performed on holographically made optical gratings at a NRSE triple-axis spectrometer are shown.